TANSTAAFL is only true in the broadest sense about opportunity cost, as in I can only live once. Any stronger interpretation doesn't hold true. Anyway, philoso

TANSTAAFL is only true in the broadest sense about opportunity cost, as in I can only live once. Any stronger interpretation doesn't hold true. Anyway, philosophy philosophy philosophy. It is interesting, may or may not be valid, does inform real life… but it's not the same as discussing the actual details of practical life. GPL lives in real-world social context, less abstract than all this other stuff.